Flexible materials such as plastic film, paper, aluminum foil & fiber etc make multi-x-layer package in single or multi-x-layer shape. The most important of Multi-x-layer package is preservation of contents and selection of package material based on character and usage of contents. For example, goods that can spoil easily by moisture or the other, and contents that require high hygiene, and foods that can cook a microwave oven, others which requires physical, chemical, functional features. But single material is hardly able to fulfill the protection of contents, quality control & operation, manufacturing condition. But multi-x-layer package can satisfy such requirements by applying various materials. Simultaneously, it is embodied with good outward design for product and CI as PR method including economic to use. Multi-x-layer package is sorted to Industrial use and Food use.